How to find the last row in a column using openpyxl normal workbook?

问题

I'm using openpyxl to put data validation to all rows that have "Default" in them. But to do that, I need to know how many rows there are.

I know there is a way to do that if I were using Iterable workbook mode, but I also add a new sheet to the workbook and in the iterable mode that is not possible.

回答1:

ws.max_row will give you the number of rows in a worksheet.

Since version openpyxl 2.4 you can also access individual rows and columns and use their length to answer the question.

len(ws['A'])

Though it's worth noting that for data validation for a single column Excel uses 1:1048576.

回答2:

find length of row and length of col

column:

colummn=sheet['A']
output tuple-->(A1,A2,A3........An)

len(colummn)
output length--> 18                    

for row length

for i in sheet.iter_rows(max_row=0)

print(len(i))

break

This will give you length of header row where you put feature name if you wan to get all rows length add max_row=len(colummmn) and remove break

来源：https://stackoverflow.com/questions/33541692/how-to-find-the-last-row-in-a-column-using-openpyxl-normal-workbook